"It is a huge honour for me and all my family and friends," Halfpenny told Wales Online.
"To pull that Welsh jersey on for the first time was a special moment for me and to do it for the 50th time is just as exciting.
"For me, growing up as a rugby player my dream was always to play for Wales, I wanted it so much. I just kept going, kept believing and kept training hard.
"It will be a massive honour to be the youngest. It's a huge privilege to be in the position I am, without the help of my team-mates, coaches, friends and family I wouldn't be in this position.
"I don't think it gets any easier. It is important I keep looking at areas where I can improve my game and keep working hard.
"You get more experienced and are always learning and it's about trying to keep developing."
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